//
//  VisitorView.swift
//  XinLangWeiBo
//
//  Created by lei on 17/2/10.
//  Copyright © 2017年 lei. All rights reserved.
//

import UIKit

/// 访客视图 - 处理用户未登录的界面显示
class VisitorView: UIView {
    
    // MARK: - 设置视图信息
    /// 设置视图信息
    ///
    /// - parameter imageName: 图片名称,首页设置为 nil
    /// - parameter title:     消息文字
    func setupInfo(imageName: String?, title: String)  {
        
        messageLable.text = title;
        
        // 如果图片名称为 nil, 说明是首页, 直接返回
        guard let imgName = imageName else {
            
            // 播放动画
            startAnim()
            
            return
            
        }
        
        iconView.image = UIImage(named: imgName)
        
        // 隐藏小房子
        homeIconView.hidden = true
        
        // 将遮罩图像移动到底层
        sendSubviewToBack(maskIconView)
        
    }
    
    /// 开启首页转轮动画
    private func startAnim() {
        
        let anim = CABasicAnimation(keyPath: "transform.rotation")
        
        anim.toValue = 2 * M_PI
        anim.repeatCount = MAXFLOAT
        anim.duration = 20
        anim.removedOnCompletion = false
        
        // 添加到图层
        iconView.layer.addAnimation(anim, forKey: nil)
        
        
    }
    
    // MARK: - 构造函数
    override init(frame: CGRect) {
        
        super.init(frame: frame)
        
        setupUI()
        
    }
    
    required init?(coder aDecoder: NSCoder) {
//        fatalError("init(coder:) has not been implemented")
        
        super.init(coder: aDecoder)
        
        setupUI()
        
    }
    
    // MARK: - 懒加载控件
    /// 图标
    private lazy var iconView: UIImageView = UIImageView(imageName: "visitordiscover_feed_image_smallicon")
    
    /// 遮罩图像
    private lazy var maskIconView: UIImageView = UIImageView(imageName: "visitordiscover_feed_mask_smallicon")
    
    /// 小房子
    private lazy var homeIconView: UIImageView = UIImageView(imageName: "visitordiscover_feed_image_house")
    
    /// 消息文字
    private lazy var messageLable: UILabel = UILabel(title: "关注一些人, 回这里看看有什么惊喜" )
    
    /// 注册按钮
    lazy var registerButton: UIButton = UIButton(title: "注册", color: UIColor.orangeColor(), imageName: "common_button_white_disable")

    /// 登录按钮
   lazy var loginButton: UIButton = UIButton(title: "登录", color: UIColor.darkGrayColor(), imageName: "common_button_white_disable")
    
}

extension VisitorView {
    
    /// 设置界面
    private func setupUI() {
        
        // 1. 添加控件
        addSubview(iconView)
        addSubview(maskIconView)
        addSubview(homeIconView)
        addSubview(messageLable)
        addSubview(registerButton)
        addSubview(loginButton)
        
        // 2. 设置自动布局
        for v in subviews {
            v.translatesAutoresizingMaskIntoConstraints = false
        }
        
        // 1> 图标
        addConstraint(NSLayoutConstraint(item: iconView, attribute: .CenterX, relatedBy: .Equal, toItem: self, attribute: .CenterX, multiplier: 1.0, constant: 0))
        addConstraint(NSLayoutConstraint(item: iconView, attribute: .CenterY, relatedBy: .Equal, toItem: self, attribute: .CenterY, multiplier: 1.0, constant: 0))
        
        // 2> 小房子
        addConstraint(NSLayoutConstraint(item: homeIconView, attribute: .CenterX, relatedBy: .Equal, toItem: iconView, attribute: .CenterX, multiplier: 1.0, constant: 0))
        addConstraint(NSLayoutConstraint(item: homeIconView, attribute: .CenterY, relatedBy: .Equal, toItem: iconView, attribute: .CenterY, multiplier: 1.0, constant: 0))
        
        // 3> 消息文字
        addConstraint(NSLayoutConstraint(item: messageLable, attribute: .CenterX, relatedBy: .Equal, toItem: iconView, attribute: .CenterX, multiplier: 1.0, constant: 0))
        addConstraint(NSLayoutConstraint(item: messageLable, attribute: .Top, relatedBy: .Equal, toItem: iconView, attribute: .Bottom, multiplier: 1.0, constant: 16))
        addConstraint(NSLayoutConstraint(item: messageLable, attribute: .Width, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1.0, constant: 224))
        addConstraint(NSLayoutConstraint(item: messageLable, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1.0, constant: 36))
        
        // 4> 注册按钮
        addConstraint(NSLayoutConstraint(item: registerButton, attribute: .Left, relatedBy: .Equal, toItem: messageLable, attribute: .Left, multiplier: 1.0, constant: 0))
        addConstraint(NSLayoutConstraint(item: registerButton, attribute: .Top, relatedBy: .Equal, toItem: messageLable, attribute: .Bottom, multiplier: 1.0, constant: 16))
        addConstraint(NSLayoutConstraint(item: registerButton, attribute: .Width, relatedBy: .Equal, toItem: nil, attribute: .Width, multiplier: 1.0, constant: 100))
        addConstraint(NSLayoutConstraint(item: registerButton, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .Height, multiplier: 1.0, constant: 36))
        
        // 5> 登录按钮
        addConstraint(NSLayoutConstraint(item: loginButton, attribute: .Right, relatedBy: .Equal, toItem: messageLable, attribute: .Right, multiplier: 1.0, constant: 0))
        addConstraint(NSLayoutConstraint(item: loginButton, attribute: .Top, relatedBy: .Equal, toItem: messageLable, attribute: .Bottom, multiplier: 1.0, constant: 16))
        addConstraint(NSLayoutConstraint(item: loginButton, attribute: .Width, relatedBy: .Equal, toItem: nil, attribute: .Width, multiplier: 1.0, constant: 100))
        addConstraint(NSLayoutConstraint(item: loginButton, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .Height, multiplier: 1.0, constant: 36))
        
        // 6> 遮罩图像
        addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|-0-[mask]-0-|", options: [], metrics: nil, views: ["mask":maskIconView]))
        addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("V:|-0-[mask]-(btnHeight)-[regButton]", options: [], metrics: ["btnHeight": -36], views: ["mask":maskIconView, "regButton":registerButton]))
        
        // 设置背景颜色
        backgroundColor = UIColor(white: 237.0 / 255.0, alpha: 1.0)
        
    }
    
}




